Symbol printing mechanism for



Aug. 4, 1953 R. A. CHRISTIAN EIAL SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHIN Dec. 6, 1947 10 Sheets-Sheet 1 Original Filed INVENTORS 'RAYMOND A. CHRISTIAN ANDREW J. STRAOHAN 8: PAUL H. WILLIAMS THEIR ATTORNEYS Aug. 4, 1953 R. A. CHRISTIAN EI'AL 2,647,688

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 FIG.3

l0 Sheets$heet 2 2569 2566 88 I SUBT.2"5 NON SEL. 25 3 25 J 1068 2572B G L Ci O 2567 am- 2511' INVENTORS zexxsxrs razrxn 3 5 PAUL H. WILLIAMS 3;: 1 'i I 52 2514 Zak/vb THEIR ATTORNEYS Aug-'4, 1953 R. A. CHRISTIAN EI'AL 2,647,638

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 l0 Sheets-Sheet 5 Herr , INVENTORS 1 RAYMOND A. CHRISTIAN 2475 ANDREW .1. STRACHAN 2414 & PAUL H. WILLIAMS THEIR ATTORNEYS g- 4, 1953 R. A. CHRISTIAN arm. 2,647,633

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6. 1947 10 Sheets-Sheet 4 INVENTORS RAYMOND A. CHRISTIAN ANDREW J. STRACHAN 8 PAUL H. WILLIAMS BY Mf THEIR ATTORNEYS g- 1953 R. A. CHRISTIAN ETAL 2,647,688

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 194'? 10 Sheets-Sheet 5 INVENTORS RAYMOND A. CHRISTIAN ANDREW J. STRACHAN 8 PAUL H. WILLIAMS BY M THEIR ATTORNEYS Aug. 4, 1953 R. A. CHRISTIAN ETAL 2,647,688

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 10 Sheets-Sheet 6 nun-mm mlillllu Nnw 5m 53% am: :5 0mm INVENTORS A CHRISTIAN J STRACHAN WILLIAMS BY W RAYMOND ANDREW a PAUL H THEIR ATTORNEYS on on Oron 4, 1953 R, A. CHRISTIAN ETAL 88 SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec.

10 Sheets-Sheet 7 RAYMOND A. CHRISTIAN ANDREW J. STRACHAN & PAUL H. WILLIAMS THEIR ATTORNEYS Aug. 4, 1953 R. A. CHRISTIAN ETAL 2,647,683

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 10 Sheets-Sheet s E II L f I I r I so I O5 I3| 0 30s 1 in 302% so 7 T 22s :3 Q: g i 6 E 303 4 I 1:5 1 Z T-I:

mvemoas RAYMOND A. CHRISTIAN ANDREW J. STRACHAN a PAUL H. WILLIAMS THEIR ATTORNEYS g- 1 5 R. A- CHRISTIAN ETAL 2,647,688

SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Original Filed Dec. 6, 1947 '10 Sheets-Sheet 9 INVENTORS RAYMOND A. CHRISTIAN ANDREW J. STRACHAN 80 PAUL H. WILLIAMS THEIR ATTORNEYS 2,647,688 ACCOUNTING MACHINES Aug. 4, 1953 R. A. CHRISTIAN ETAL I 10 Sheets-Sheet 10 THEIR ATTORNEYS ticular customer.

Patented Aug. 4, 1953 SYMBOL PRINTING MECHANISM FOR ACCOUNTING MACHINES Raymond A. Christian, Andrew J.

Paul H. Williams, Dayton, The National Cash Register Strachan, and Ohio, assignors to Company, Dayton,

' Ohio, a corporation of Maryland Original application 7 90,032. Divided and 1951, Serial No. 225,313

I 12 Claims.

The, present invention relates to calculating machines and particularly to machines of the accounting or bookkeeping type which are provided with a traveling paper carriage for supporting the bookkeeping-forms and also for automatically controlling the various functions of the machine in accordance with the columnar positionin thereof.

This application is a division of the application for United States Letters Patent Serial No. 790,032, filed on December 6,1947, by Raymond A. Christianet al., which issued into Patent No. 2,626,749, January 27, 1953.

In the business world of today, there are nearly as many differenttypes of bookkeeping systems employedas there are separate business organizations. It has, therefore, been necessary for the builders of bookkeeping or accounting machines to modify the designs of their machinesfrequently in order to adaptthem to the particular bookkeeping .system employed by the prospective purchaser. These so-called customer order machines are costly tobuild, since certain portions of the machines must be practically handmade in order to furnish a machine having the desired characteristics.

Accordingly; it is an object of the present invention to provide :a solution to this problem of adapting a particular type of accounting machine tofit the bookkeeping system utilized by-any par- This has been done in the present instance by'designing an accounting or bookkeeping machine which is sufficiently, flexible in character that it may be used in connection with practically any of the complex accounting systems used by present-day business establishments.

Another problem confronting boththe manufacturers and the users of accounting machines is the complexity of many of our present bookkeeping systems. Not only is it difficult to construct machines which are capable of performing .the many and complicated operations involved,

but it is also difilcult for the operator ofthe machine to learn how to manipulate the various controls of the machine so as to properly perform the various operations involved in making an entry on the books. It is, therefore,'a further object 'of the invention to provide a bookkeeping machine which will perform most of theseopera- December 6, 1947, Serial No.

this application May 9,

tions automatically and therefore require a minimum amount of time and attention on the part of the operator of themachine.

In order to better enable the machine embodying the present invention to handle the complicated present-day bookkeeping procedures, it is provided with a large number of totalizers which may be selected simultaneously in various com binations for either addition or subtraction, so as to enable postings to be made into a large number of separate accounts during a single machine cycle.

A further object of the invention resides in the provision of a simplified type of front-feedpaper carriage. This carriage is driven in both its forward direction and its reverse direction by a hydraulic drive mechanism which is operated by the same motor which serves to drive the main operating mechanism of the machine.

Still another object'of the invention is to provide certain novel key mechanisms whereby the operator may control the functioning of the machine in a desired manner.

' Another object of the invention is to provide a novel mechanism for printing function-identifying symbols after the various numerical entries, together with means for enabling this mechanism to be disabled at the option of the operator under certain conditions.

A further object of the invention resides in the provision of the various interlocks and control devices which are necessary in order to insure the proper operation of the machine and its various component mechanisms despite the inexpert handling thereof by an unskilled operator.

With these and other objects in view which will become apparent from the following description, the invention includes certain novel features of design and combinations of parts, a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings:

Figure 1 is a left side elevation of the front portion of the present machine. I

Figure 2 is a perspective view of certain of the mechanism controlled by the Non-symbol key for preventing the'printing of symbols under certain conditions.

Figure 3 is a plan view showing the totalizer control slides and the symbol-printing control slides, together with the studs on the control keys which cooperate with these slides.

Figure 4 is a perspective view of the two enabling slides associated with the symbol-printing mechanism.

Figure 5 is a fragmentary view showing the forward end of the No. 1 totalizer slide and certain of the symbol-printing control mechanism cooperating therewith.

Figure 6 is a fragmentary view showing the forward end of the sub-total slide and certain of the symbol-printing control mechanism cooperating therewith.

Figure 7 is a plan view of the devices used for sensing the lower edges of the totalizer control slides to thereby control certain functions of the machine.

Figure 8 is a left side elevation of the mechanism shown in the preceding figure.

Figure 9 is a view of a portion of the symbolprinting mechanism as viewed from the righthand side of the machine.

Figure 10 is a diagrammatic view of the various symbols on the symbol type sectors.

Figure 11 is a perspective view showing the symbol-printing control slides and certain of the mechanism connected therewith.

Figure 12 is a left side view showing the controlexercised by the center bank of function control keys over the symbol-printing mechanism. Figure 13 is a left side view illustrating the control exercised by the right-hand bank of function control keys over the symbol-printing mechanism.

Figure 14 is a right side elevation showing the mechanism for controlling the movement of the symbol-printing sector to printing position.

Figure 15 is a perspective view of the complete machine.

Figure 16 is a plan view of the complete keyboard of the machine disclosed herein.

Figure 17 is a fragmentary longitudinal sectional view of the rear portion of the machine, taken just to the right of one of the amount banks.

Figure 18 is a front view of a portion of the motor drive mechanism for the machine.

H Figure 19 is a right side view showing in detail the construction of the cycle-initiating or starting mechanism.

' Figure 20 is a right side elevation of the various motor bars and further details of the cycleinitiating mechanism associated therewith.

General description Certain of the principles and features of the machine hereinafter to be described are disclosed in the following United States Patents: 1,197,276, September 5, 1916, Halcolm Ellis; 1,203,863, November 7, 1916, Halcolm Ellis; 1,819,084, August 18, 1931, Emil John Ens; 2,038,717, April 28, 1936, Raymond A. Christian; 2,079,355, May 4, 1937, Charles L. Lee; 2,181,975, December 5, 1939, Charles L. Lee; 2,189,851, February 13, 1940, Paul H. Williams et al.; 2,217,221, October 8, 1940, Jesse R. Ganger; 2,243,806, May 27, 1941, Laurence N. Lehman; 2,316,520, April 13, 1943, Henry F. Lang; and 2,442,402, June 1, 1948, John T. Davidson et al.

The basic structure of the present machine is patterned after the machine shown in the foregoing patents, which has been on the market for many years. For example, the construction trolling the various machine functions, however,

are new in the subject machine, as are also the paper carriage and the controlling mechanisms therefor. In addition, the instant machine is equipped with an electric typewriter which is driven by the same motor that operates the remainder of the machine. With this brief, overall description in mind, the various parts of the machine will now be described in detail, so as to provide a full and complete understanding of the entire device.

General organization and cabinet (Figure 15) A perspective view of the machine as a whole is shown in Figure 15 of the drawings, and a general understanding of the layout and organization of the machine may be obtained from this illustration. As shown herein, a typewriter keyboard is located at the front end of the machine, while just behind and somewhat above this keyboard is an amount keyboard on which may be set up the various amounts which are to be entered in the accounting machine. To the left of the amount keyboard is a control keyboard containing the various function control keys, while to the right of it are located a plurality of motor bars and carriage control keys. In the center, just above the amount keyboard, are a group of type sectors for the accounting machine, while just to the left of these sectors is located a type basket for the electric typewriter.

Immediately behind the aforementioned printing mechanism is a rotatable platen in which accounting forms and/or other record material may be supported, this platen being mounted on a traveling carriage which is movable back and forth across the machine. Behind the paper carriage is shown that part of the machine cabinet which houses the add-subtract totalizers. At the front of the machine, just to the left of the typewriter keyboard, is a switch lever for starting and stopping a continuously-running electric motor, which drives the various operating mechanisms of the machine.

As shown in Figure 15, the operating mechanism of the machine is housed in a cabinet made up of several separate sections, each of which is independently removable in order to yield access to the part of the machine lying thereunder. This cabinet is composed of a front piece 200, extending across the front of the machine and having a central opening therein for accommodating the keys of the typewriter mechanism. Located on either side of the machine are side plates 28! and 292', immediately behindwhich are located additional side plates 203 and 204, which cover the sidm and part of the top of the totalizer section of the machine. The top of the totalizer section is further covered by a plate 2.05, which also extends down over the rear end there- -of and, together with similar downwardly-extending portions on side pieces 293 and 2, serves to cover-the rear of the machine.

secured to the side frames (not shown) operating mechanisms of the machine.

aee'neas The thus-constituted accounting machine cabinet is further complemented by keyboard cover plates 206, 201, and208, which are provided with apertures through which extend the upper ends of barrel-type key caps. To the rear'of the keyboard and extending across the machine between Framework The principal element of the machine frame is a cast-iron base 213 (Figures 1 and 17), which supports, either directly or indirectly, all of the various mechanisms going to make up the present machine. This base is generally rectangular in shape and is provided with various ribs, pads, bosses, and cut-outs for accommodating all of the various structures supported thereon or depending therefrom. Mounted on top of the base toward the front of the machine are a left side frame 214 and a right side frame 215. Extending between the upper portion of the side frames and connected thereto is an angle bar 2 I6, which serves to support the forward part of the carriage as well as the carriage control mechanisms cooperating therewith. Located behind the angle bar 216 and supported by the side frames is a rail 211 for supporting the rearward portion of the carriage. The angle bar 2l'6 is 214 and 215, and the rail 211 is secured to the side frames by screws The base, the side frames, and the cross pieces for supporting the carriage constitute the main framework of the machine, although there are, of course, numerous subframes secured in one way or another to these main frame elements for supporting the various These sub-frames will be described in connection with the mechanisms which they support as the description proceeds.

Motor drive The various operating mechanisms of the pres ent machine are driven by an electric motor 220 (Figure 18) secured to the under side of the base 2l3. As previously mentioned herein, the motor is adapted to operate continuously while the machine is in use and may be turned on or off by means of a single-pole, single-throw toggle switch (Figure 15), which may be operated from the front of the machine by means of a lever 222 operably connected therewith. A speed control device or governor (not shown) is provided onthe rear end of the motor shaft for the purpose of maintaining the speed of the motor essentially constant under the varying load encountered in this type of service. On the front end of the motor shaft 223 (Figure 18) is secured a worm 224, which meshes with a worm wheel 225 pinned to a shaft 226, which is journaled at either end on bearings (not shown) provided in the side walls of a gear casing 221, which is secured by bolts 228 (only one shown) to the frame of the motor 220 and by other bolts 229 (only one shown in Figure 18) to the under side of the base 213. Hence, whenever the motor is running, the shaft 226 will be driven at a reduced rate of speed through the worm 224 and the worm wheel 225. Pinned to the right end of. the shaft 226 is a spur gear 240 (Figures 18 and 19), which meshes with two other spur gears to cause the 241 and 242. The gear MI is secured to a sleeve 243, which is rotatably journaled on a long stud mounted in the right-hand side of the gear casing 221. l I

As previously mentioned, the gear 240 meshes with the gear 242, which is resiliently secured to a notched wheel 250 (Figure 19) by means of a rubber ring (not shown), which is bonded to the gear 242 and also to a metal ring (not shown) secured to said wheel 250. The wheel 250 is rotatably mounted on a main cam shaft 253.

The gear 242 and the notched Wheel 2511 may be engaged with the main cam shaft 253 so as shaft to be given cycles of operation. The means for engaging the gear and thewheel with the shaft 19) having a stepped hub 256, which is pinned to the shaft 253. Loosely mounted on the step of the hub 256 is a clutch control arm 251, which is urged in a clockwise direction on the hub 256 by a spring 258 connected between the arm and the disc 255. The arm 251 is normally prevented from clockwise rotation under the influence of the spring 253 by a tripping arm 259, the end of which cooperates with an extension 260 of the arm 251. The tripping arm 259 is secured to the left-hand end of a short shaft 211 which is rotatably mounted in the machine frame and may be caused to rotate in a clockwise direction, so as to release the arm 251 to the influence of the spring 258, under the control of the several motor or starting bars of the machine and certain other machine operation control mechanisms. 7

The upper portion of the arm 251 (Figure 19) is provided with gear teeth 212, which mesh with corresponding gear teeth formed on a headed portion 213 of a clutch dog 214 journaled in the disc 255 near its periphery. The dog 214 passes through the disc 255 and projects into the path of a series of notches 215 around the periphery of the wheel 250. The under side of the dog is flattened so that it will clear the wheel and the notches when the dog is in the position shown in Figure 19. However, when the tripping arm 25!! is moved away from the extension 260, the arm 251 will be rotated clockwise under themfluence of the spring 258, and the dog 214 will be rotated counter-clockwise so as to cause the left-hand edge of the stud to engage with one of the notches 215 of the constantly rotating wheel 250, thereby causing the disc 255 and the main cam shaft 253 to be rotated clockwise as viewed in Figure 19. The clutch control arm 2511'is limited in its movement on the hub 256 by shoul ders 216 on the arm 251, which shoulders 00- operate with the sides of the headed portion 213 formed on the clutch dog 214. In order to brace the clutch dog 214, its upper half is surrounded by a bushing 211, which is secured to the disc 255.

Secured to the right-hand end of the shaft 211 is a two-armed lever 218, the rearwardly-extending arm 219 of which is provided with a roll (not shown) and the forwardly-extending arm of which is bifurcated and engages a stud 280 in the lower end of a lever 28l. The lever 28! is secured to the right-hand end of a shaft 262 journaled at one end in the side frame 215 and at the other end in a vertical bracket (not shown) which is spaced from the right of the side frame 215 and secured to the base 213 by screws passing through bent-over feet thereon. The lever 28| and the shaft 282 are urged counter-clockwise by a spring 285 stretched between a stud inthe lever 28! and a stud mounted in the side frame 215. Hence, the spring 285 constantly tends to 253 comprises a disc 255 (Figure 7 move the tripping arm 25.9 clockwise out of engagement with the extension 200, so as to engage the clutch and cause the main cam shaft .253 to be rotated clockwise, as viewed from the righthand side of the machine.

The main cam shaft 253 extends transversely across the machine beneath the base 213 (Figures 1 and 1'1) and is iournaled at'either end in roller bearings 285, which are mounted in brackets 286 and 281 secured to the under side of the base by screws 288.

The cam shaft 253 has secured thereto a large number of cams for controlling various machine functions in a manner to be more fully described later herein. Secured to a sleeve near the righthand end of the cam shaft is a tripping arm restoring cam (not shown), which normally rotates in unison with the camshaft 253, said cam being provided with a lobe which engages the roll on the extension 219 of the lever 218 (Figure 19) at the end of one revolution of the cam shaft 253 to thereby rotate the shaft 21! counterclockwise and move the tripping arm 250 back into the path of the extension 250 on the clutch control arm and so cause the clutch to be disengaged. The shaft 21l and the arm 259 are retained in their restored positions, against the urgency of the spring 285, by a mechanism which will be described later herein in connection with the motor bars of the machine.

In order to insure that the main cam shaft will complete its movement into its home position after the clutch has been disengaged, a homing cam 282 is secured to the cam shaft 253 (Figure 19) and is provided with a camming face 293,

which cooperates with a roller 254 mounted on a pivoted lever 205, which is biased by a strong spring 286 in such a direction as to press the roller against the camming face 203 and thereby rotate the shaft 253 into its home position, as shown in Figure 19, where the roller seats itself in a slight depression formed in the face of the cam.

It will be noted from the foregoing description that the cam shaft 253 will be positively driven by the electric motor 220 through one revolution in a clockwise direction (as viewed from the right-hand side of the machine) each time the clutch is engaged.

Referring now to Figure 18, a shaft 301 is coupled at 302 to the shaft 226 driven by the motor 220. The shaft 301 is journaled in a pair of downwardly-extending legs 303 of a casting 304 secured to the under side of the base 213 by screws 305. Located on the shaft 301 approximately midway between the legs 303 is a helical gear 300, which meshes with another helical gear pinned to the lower end of a vertical shaft (not shown) journaled in a boss 300 formed integrally with the casting 304. Secured to the upper end of the vertical shaft is a spur gear 3f0, which meshes with a gear 3 (Figure 17) secured to the upper end of a stub shaft journaled in a bushing extending between a cover plate 314 for a fluid clutch or hydraulic drive mechanism 310 and an auxiliary plate (not shown) suspended from said cover plate 314- by means of hanger studs (not shown). Meshing with the gear 311 is a small gear 311, which is pinned to the upper end of a vertical shaft (not shown) which drives one member of the fluid clutch 318. A reversible gear mechanism connects the other member of the fluid clutch to the traveling carriage to resiliently drive said carriage .in forward and reverse tabulating directions.

Motor bars As mentioned earlier herein, the present machine is provided with a plurality of motor bars located on the right-hand side of the keyboard, which serve to initiate operations of the machine and also to control certain functions thereof. The mechanism controlled by the several motor bars for causing the main clutch to be engaged and the machine to be operated is shown in Figures 19 and 20. As shown in these figures, the machine is provided with a Main" motor bar 2050, a Skip motor bar 205i, and a Vertical" motor bar 2052, which motor bars are slidably mounted on studs 2053 secured to the right side frame 215. In the case of the motor bars 205! and 2052, an auxiliary slide 2054 is slidably mounted on the studs 2053 adjacent to the stems of the motor bars. Each slide is provided with a vertical slot 2055, which cooperates with a stud 2050 secured in the stern of the associated motor bar 2051 or 2052. Each slide is normally maintained in its raised position with the stud 2050 seated in the lower end of the slot 2055 by means of a spring 2051 stretched between the slide and a stud 206! secured to a latch 2058 pivotally mounted on a stud 2059 secured to the right side frame. In each instance, the latch 2058 is adapted to cooperate with a notch 2000 formed in the edges of the slides to thereby retain the latter in their lower positions whenever their associated motor bars are manipulated. Hence, depression of either of the motor bars 205i or 2052 will cause the slides associated therewith to be carried down and retained by the latches 2058, while the motor bars themselves will be permitted to return to their raised or normal positions by means of restoring springs 2002.

Each slide 2054 is provided with a formed-over ear 2053, which engages with a finished pad formed on the top edge of a substantially horizontal link 2054. Similarly, the main motor bar 2050 is provided with a formed-over ear 2085, which engages with another finished pad on the upper edge of the link 2064. The link 2004 is carried by a pair of bell crank levers 2065, which are pivotally mounted on studs 2001 secured to the side frame 215. As shown in the drawings, the link is pivotally connected at either end to one of the horizontally-extending arms of the bell crank levers, while the depending arms of these levers are connected together by a link 2058,

-- thereby causing parallel movement of the link Mounted on the link 2064 is a stud 2010, on which is pivotally mounted a pressure arm 201i, which is provided with a finger 2012, which is urged into engagement with a spring stud mounted on the link 2064 by a spring 2013. The pressure arm 2011 is provided with a bent-over car 2014 (Figures 19 and 20), which lies above the lefthand end of a lever 2015 pivotally mounted on a stationary stud 2016, said lever being urged clockwise about the stud by a spring 2011. The lever 2015 carries a square stud 2010, which cooperates with a notch 2018 formed in the lower edge of a clutch control slide 2080 supported for horizontal sliding movement on studs 208i and 2082 mounted in the auxiliary frame plate 2083. The slide 2080 carries astud 2084, which is engaged within a bifurcation in the upper end of an arm 2085 secured to the shaft 282. Hence, the slide is constantly urged toward the front of the machine by the spring-2B5, but such movement is normally prevented by engagement of the square stud 2018 with the-rear end of the notch 2019. Whenever any of the motor bars are depressed, however, the link 2064 and the pressure arm 201i will be moved down so as to cause the ear 2014 to engage the end of the lever 2015 and move the square stud out of engagement with the notch on the slide, thereby permitting the latter member to be moved toward the front of the machine under the influence of the spring 285. At the same time, the tripping arm 259 will be disengaged from the extension 260 of the clutch control arm, thereby causing the clutch to be engaged and the machine to be given a cycle of operation.

Since it is ordinarily desirable to cause the machine to come to rest at the end of each cycle of operation, even though the motor bar be held depressed by the operator, means is provided for enabling the square stud to re-engage the notch in the control slide when the latter member is restored toward the end of the cycle. It will be noted from Figure 19 that the forward edge of the arm 2085 engages the ear 2014 and will thus cause the pressure arm 20' to be rocked clockwise against the tensionof the spring 2013 when the slide is-released for forward movement. This will cause the ear to be moved oil the end of the lever 2014, thereby'permitting the spring 2011 to urge the square stud into engagement with the lower edge of the slide- 2080. Hence, when the slide is restored near the end of the cycle, the square'stud will once again engage the notch 2019 and retain the tripping arm 259 in engagement with the extension 260 even though the motor bar be held depressed. When the motor bar is released, the pressure arm will again move to its raised position, and the spring 2013 will' cause the car 2014 to move over the end of the lever 2015, thus restoring the parts to the positions shown in Figure 19.

In order to release the auxiliary slides 2054 from therestraint of the latches 2058 near the end of the machine cycle, the slide 2080 is provided with a pair of latch-releasing finger 2 086, which will engagethc studs 206i on the latches as the slide is restored toward the end of the cycle to thereby disengage the latches and permit the auxiliary slides to be restored to their inactive positions by the springs 2057.

Amount banks and totalizers The present machine is provided with ten denominational rows of amount keys 509 (Figures 15 and 16) for setting up values to be recorded and registered. .For each rowof amount keys there is an amount actuator rack 6|1 (Figure 17) mounted for horizontal shifting movement in the machine. Each actuator rack 6l1 includes an extension rack 901 connected thereto by a link 906, said rack and said extension movable in unison as a single unit. Operatively connected to each actuator rack is a reducer arm segment 9l3, which is operatively connected to a corre* sponding printing sector 942. Each reducer arm segment 9l3 is resiliently connected by a spring 915 to the visual leading frame-bar 9l5 which is rocked first rearwardly or counter-clockwise and then forwardly or clockwise each machine operation in the well-known manner.

The machine is presently equipped with ten add-subtract totalizers, five of which are located above theactuator racks H1 and five below said 10 actuator racks. Each totalizer has a gear wheel 991 (Figure 17) for each denominational order arranged to be engaged with corresponding rack teeth on the upper and lower edges of the actuator racks 6|1. In adding and subtracting operations, rearward initial movement of the leading frame bar 9l5, through the springs 9l6, yieldingly carries the actuator racks SI'I, the segments 9| 3, and the printing sectors 942 in unison therewith until such movement is terminated by engagement of one of a series of graduated steps on each of said actuator racks with a stud in the stem of the depressed amount key in the corresponding order. This positions the actuator racks and the corresponding printing sectors according to the values of the depressed amount keys, after which operation of the impression mechanism causes said values to be recorded upon'record material supported by the platen roll 539 of the traveling carriage.

In adding and subtracting operations, the wheels of the selected totalizers and the actuator racks are engaged and disengaged in proper timing to additively or subtractively enter the values set up on the depressed amount keys therein. Each totalizer wheel is provided with a transfer tripping cam with diametrically-opposed tripping teeth, which cooperate with correspond' wheels to zero position, which position is de termined by the teeth on the corresponding tripping cams contacting the corresponding add trip ping pawls, to position said racks and the printing sectors according the selected set of totalizer wheels. Forward or clockwise return movement of the leading frame bar 9l'5 (Figure 17) restores the actuator racks selected totalizer are disengaged from the actuator racks prior to their return forward movement, and therefore said Wheels remain in a zeroized condition.

tions, the wheels of the selected totalizer remain in engagement with the actuator racks during.

their forward return movement, which movement restores said wheels to their original condition.

Totalizer selection The No. 1 or balance totalizer is selected for addition, subtraction, balance, and sub-balance operations, respectively, by the use of control keys SM, 662, 652, and 653 (Figures 16 and 15). The Nos. 2 to 9 totalizers inclusive are selected for adtheir subtract and total control keys 658 and 659, The 6-9 totalizers are selected and conditioned for subtract and total to the values contained in.

In sub-total taking p s,

taking operations by use of the .6-9 key5166'3-666 in combination with their subtract and total control keys 661 and 668. The 2-9 totalizers are .selected and conditioned for sub-total taking operations by use of the proper 2-9 selecting keys 654-551 or 663-666 in combinationwith the corresponding total control keys 659 or 666 and a sub-total control key 669 (Figures 16 and 15).

In addition to the control keys described above, the .1-9 totalizers may be selectedand conditioned for adding, subtracting, total-taking, and subtotal-taking operations through the medium of the traveling carriage in predetermined columnar positions thereof.

Located beneath the :control keys 652-669 is a plurality of :totalizer control slides for deter-mining the time of engagement and disengagement of the totalizers and the actuator racks 616. There are eight similar control slides 1651 (Figures 1, 3, 5, and 6) for the 2-9 totalizers inclusive and a control slide 10.61 for the No. 1 or balance totalizer, said slides being mounted on bolts 646 secured in the frame 214, tor horizontal sliding movement.

The positioning of the No. 1 slide 1661 is controlled by the No. 1 control keys 652,, 653, 661, and 662 or by the traveling carriage .in predetermined columnar positions thereof, and through its positioning said slide determines the time in which the N0. 1 or balance totalizer is engaged with and disengaged from the actuator racks to control the type of operation being performed in said totalizer. In adding operations, the controlslides 1651 for totalizers 2-9 are positioned under control of their corresponding 2-9 selecting keys 654-651 and 663-666 to select and condition the corresponding totalizer for addition. In subtracting operations, the control slides i651 are positioned under control of the 2-9 selecting keys, in combination with the subtract keys 668 and 661 to select and condition the corresponding totalizers for subtracting operations. In total-taking operations, the control slides 1651 are positioned under control of the 2-9 selecting keys in combination with the total control keys 659 and 668 to select .and condition the corresponding totalizers for total-taking operations. In sub-total-taking operations, the slides 1651 are positioned under control of the 2-9 selecting keys in combination with the total keys 658 and 6.61, and the subtotal key 669, to select and condition the corresponding totalizers-ior sub-total-taking operations. Moreover the slides 16.5.1 for the 2-9 totalizers may be positioned under control of the traveling carriage in preselected columnar positions thereof to select and condition the corresponding totalizers for add, subtract, total-taking, and sub-total-taking operations.

Symbol-printing mechanism Situated to the right of the amount type sectors 9-42 are two symbol type sectors 2 166 and 5246! (Figures 9, l0, and 15), which are pivotally Isupported-on the upper ends of symbol-printing arms 2462 and 2463, in turn pivotally supported on "the printer shaft 945. The means for cooking and firing the symbol type sectors so as to cause printing on the record material is old and well known in the art and therefore needs no description herein. The means for adjusting the symbol type sectors into printing position is likewise similar to that explained in connection with the amount sectors 942 and consists of a pair of links 2464 and 2465, which connect the sectors 2466 and 2461, respectively, with reducer arms 2466 and 2461, rotatably iour-naled "on the reducer and shaft 914. Associated with each of the reducer arms are areducer arm segment 2468 and a reducer arm segment 2468, which segments are connected by links 2410 and 2411 to arms 2412 and 2413, respectively, which are secured to the left-hand ends of symbol-printing shafts 241-4 and 241-5. The links 2416 and 2411 are urged rearwardly by means of springs 2416 (only one shown) which are secured to the reducer arms 2466 and 2461., thereby urging the symbol type sectors into printing position. The symbolprin-ting shafts extend across the front of the machine below the amount and typewriter keyboards, so as to enable the symbol type sectors to be positioned under the control of the keys located in the control key banks on the left side of the machine.

As illustrated in Figure 11, the positioning of the shaft 2414 is controlled by a pair of slides 241i and 2 418, which cooperate with stops on the "Add 1 key 661 (Figures 1 and 3)., the Subtract 2-5 key 658 and Subtract 6-9" key '661, the Reverse key 6'11, and the overdraft pitmnn 2352,, so as to cause the type sector 2466 to be difierentially positioned to thereby indicate by an appropriate symbol the type of operation being performed. Similarly, the shaft 2415 is 110- sitioned under the control of a pair of slides 24 19 and 2486, which cooperate with studs on the No. 2-160. 9 totalizer selecting keys so as to cause the type sector 2461 to be diflcrentially positioned to thereby cause an appropriate symbol to be printed to indicate the particular totalizer involved in the transaction.

As shown in Figures 3 and 11., the slide 2486 is provided with four projections 2481,, which are adapted to engage the left-hand ends of the studs H .16 when any one of the four key: 663-666 bearing the studs is depressed, thereby difierentially positioning the slide and the shaft 2415 so as to cause one or the symbols 6, '1," 8., or 9 (see Figure 10) to be moved into printing position. The shaft and the slide are adapted to be positioned under the influence of the spring 2416 secured to the reducer a'iim 2461 when the leading frame bar 315 is moved initially toward the rear of the machine in the usual manner, the slide 2486 being coupled to the shaft 2415 by an arm 248.2 secured to the :shaft and bearmg at its upper end a stud 2483, which engages a bifurcation in the lower edge of the slide 2486. The slide is provided at either end with elongated slots which engage the bolts 646 (Figure 1) 'so as to support the slide for longitudinal movement. The slide 2419 is likewise slidabiy mounted on the holds 646 and is provided on its lower edge with a wide notch 2484, within which is located a stud 2485 mounted on the upper end of an arm 2486, which is secured to the shaft 2415. The slide 2419 is provided on its upper edge with four projections 2481, which are adapted to engage corresponding studs 2468 (Figure 3.) .secured to the right-hand sides of the No. 2-No. '5 totalizer keys 654 to 651' inclusive. Hence, when any one of these four keys is depressed, the stud 2488 thereon will be placed in the path of movement of one of the projections 2481 and so control the positioning of the slide. Accordingly, when the leading frame bar 915 is moved initially toward the rear of the machine during a cycle of operation, -the spring 2416 will cause the shaft 2415 to be rotated counter-clockwise, as viewed in'F-igure 11, and cause the stud 2465 to travel -freely within the notch 13 2404 until it strikes the rear edge thereof and picks up the slide, which is free to move until one of the projections thereon engages a stud 2488. This will stop the symbol type sector 246I in a position where it will print one of the sym-- bols 2, 3, 4, or 5, engraved thereon.

If none of the No. 2-No. 9 totalizer selection keys are depressed, the shaft 2415 will be prevented from rotating under the influence of the spring 2416 when the machine is cycled by reason of an arm 2489 secured to the shaft and provided at its upper end with a formed-over ear 2490, which engages the end of a finger 249I formed on the end of an arm 2492 pivoted on the forward bolt 646. The arm 2492 is provided at its upper end with a pin 2493 extending from either side thereof, the left-hand end of the pin being adapted to cooperate with a tail 2494 (Figure 12) formed on the forward end of the slide 1I9, which is associated with the No. 6-No. 9 totalizer selection keys 663-666. As shown in Figure 13, the right-hand end of the pin 2493 engages a bifurcation provided in the lower edge of a slide 250I, which is provided with slots 2502 engaging over the screws IIIZ. This slide is urged toward the front of the machine by a spring 2503, so as to normally maintain camming surfaces 2504 in engagement with studs 2505 mounted in the stems of the No. 2-No. 5 totalizer selection keys 654 to 651 inclusive. In a similar manner, the slide 1I9, shown in Figure 12, is pro: vided with camming surfaces 2506 cooperating with studs 108, 109, HO, and H I, secured to the stems of the No. 6-No. 9 totalizer selection keys 663-666, these surfaces being held in engagement with the studs by the spring 2503 acting through the slide 250I, the pin 2493,'and the tail 2494. Hence, when any one of the No. 2N0.-5 or No. 6-No. 9 totalizer selection keys is depressed, the arm 2492 will be rocked counter-clockwise to thereby move the finger 249i away from the ear 2490 and so unlock the symbol-printing shaft 2415and thereby permit the sector 246I to be adjusted into printing position under control of theNo. 2-No. 5 and No. 6-No. 9 totalizer. selection keys. i

The symbol type sector 2460 is controlled in a similar manner by slides 2411 and 2418, which are slotted at either end to engage over the bolts 646 (Figure 1). Each of these slides is providednear its forward end with a bifurcation which engages studs 2501 and 2508, which are secured to the upper ends of arms-2509and 25I0, respectively, secured to the shaft is provided with projections 25I I and 25I2, which are adapted to engage the stud I239 on the Subtract 2-5 key 658 and the ear 235I formed on the upper end of the overdraft pitman 2352, respectively, and thereby control the positioning of the type sector 2460 for the Subtract symbol 25I3 (Figure 10) or the Overdraft symbol I4. In a similar manner ,the slide 2418 is adapted to cooperate with studs to the'Reverse key 61I and the Subtract 6-9 key 661, respectively, which studs will move into the path of abutment faces 25" spectively, on the slide 2418. In this manner, the type sector 2460 will be adjusted to position to print a Reverse symbol 25I9 or the Subtract symbol 25I3, according to which of-the two keys is depressed.

The slide 2411 is provided on its right-hand end with an upstanding finger 2533, which is adapted to engage the stud I068 mounted on the Add 1 key 66I when the latter is depressed to thereby control the positioning of the symbol 2414. The slide 2411 25I5 and 25I'6secured and 25l8, re-' symbol 2532-all fall into the latter type sector 2460 so as to cause an Add 1-symbol, 2534 to be located in printing position.

When the Non-select key 612 is depressed,- the slides 2411 and 2418 will be released for movement, and, since no stud is positioned by this key to block the travel of the slides, they will move all the way to the rear and thereby cause a .Non-- select symbol 252I to be positionedat theprinting line. V

Additional positions of the symbol type sector 2460 are defined by a stop arm 2522 (Figures 4, 5, and 6) secured to the shaft 2414 and bearing astud 2523, which engages within a slot formed in a selecting arm 2524 loosely pivoted on the fore ward bolt 646. The latter arm is provided with a finger 2525, on which are formed abutment faces 2526 and 2521, which are adapted to en gage square studs on the No. 1 totalizer slide I061 and the sub-total slide H90. Thus, in a sub-.-- total-taking operation, instead of being free ,to. move all the way forwardly in the machine,"as is normally the case, the sub-total slide I I will be stopped in its sub-total-taking position,- there-' by locating a square stud 2528 in, the path on the face 2521 and so causing the symbol type sector 2460 to be positioned with a Sub total'F symbol 2529 positioned at the printing line. Similarly, when the No. 1. totalizer slide I 051 (Figure 5) moves to its subtract position, asquare. stud 2530 secured thereto will be located ina position'to engage the face'2521 and thereby stop the printing sector 2480 in position to print a Subtract 1 symbol 253I.' If the slide I 061? is permitted to move to its total-taking position, the stud 2530 will then be in a position to engage the face 2526 to thereby stop position to print a Balance 1 symbol 2532.

In connection with the mechanism just described, it should be noted that those symbols.

which are controlled by studs mounted on the stems of the control keys will not be printed when the control is exercised bya carriage stop instead of by a key, whereas those symbols which are controlled from the totalizer control slides will be printed in either case, since the slides are controlled the same by either the keys or the traveling carriage. symbols-i. e., the Sub-total symbol 2529, the Subtract 1 symbol 253i, and the Balance 1 category, as does also a Total symbol 2535, the printing of which is controlled by lugs 2536 (Figure 6) located on the underneath side of the "totalizer control slides I 05I for the No. 2-No. as viewed in Figure 6, to' their total-taking positions, the lugs 2536 will be positioned over a bail 2531 (see Figures 2, '7, and 8), which is loosely pivoted on a shaft 2538, which is journaled be-- tween the side walls of the bracket 64I (Figure 1). The bail is urged upwardly toward engagement with the lugs 2536 by a spring 2539, which is stretchedubetween a stud secured to the righthand side arm of the bail and a stud located'on the bracket t4I.v However, the bail is normally held below the path of the lug bya stud 2540 (Figure 8), mounted on the forward end of the slide member I I53, which engages with the lower end of a'finger 254i secured to the right-hand end of a sleeve 2542 (see also Figure 2), which is loosely journaled on the shaft 2538. The sleeve is secured at its left-hand end to the left side arm of the bail 2531, and the bail is thereby prevented by the stud 2540 from movinglupwardly. into engagement with the lugs until the slide the type sector in The last three mentioned When the control slides I05I' 9 totalizers move to theright,

1 member is released for rearward movement at the appropriate time .in the machine cycle by the arm H51 and the cam H519. Flexibly connested to the right side arm of the bail 25:31 is a blocking finger 2543, which lies in the path of a stud 2544 (Figure 6) mounted on the selecting arm 2524 when the bail is blocked against clock wise movement by one of the lugs 2536. The engagement of the stud with the finger 2543 cause the symbol type sector 24511 to be located in position to cause the Total symbol 2535 to be printed and thereby indicate that a total has been taken from one of the totalizers -#2-#9 inelusive. If this is printed under the control of the control keys, the symbol type sector 245! will be positioned to print the number of the totalizer involved after the Total symbol 2535. However, if the total :is printed under the control of a stopon the traveling carriage, the Total symbol alone will be printed on the record material.

The 2543 is flexibly attached to the right side arm of the bail 2531 in order to allow the bail "to be restored by the slide member 1 I513 lFigure 3 slightly earlier in the machine cycle than the selecting arm 252 4.. It will be noted that the stud 2-544 will move over the finger 25.43 when the bail 2531 is permitted to move upwardly due to the absence of .a lug 2.535 and, hence, will lie above the finger at the time the latter is restored upwardly. It is therefore necessary to make the finger flexible so that it can yield at this time and permit the bail to he restored without interference by the stud .2544.

The stop arm 2522 1(Eig-ure 4 has formed thereon an ear 2550., which is adapted to cooperate with the end of a finger 255! formed on a blocking am 2552, which is secured to right-hand end of the shaft .2535. arm is provided with a bifurcation which engages a stud 2553 mounted the lower edge of a slide 2554, which is provided with elongated :apertmes in either end thereof by means ad which slide is mounted for slidingrnovements on the bolts 546.

Secured to the left-hand end of the shaft 2538 isanarm 2555, in the upper end of which is a stud 2555, which engages "with a bifurcation the lower edge of a. slide 2551, which, like the slide 2554, .is .slidably supported at either end on the bolts 545.. The slides are-resiliently urged toward the front of the machine by aspring 2558 attached to the arm 2552, though they are normally held in the rearward positions, as shown in Figure d, by a stud 25.59 mounted :in the lower end of an arm 25.60 secured to the shaft 2533., which stud bears against the forward end of the slide member 1.153, as shown in Figure 23. With the parts in this position, the finger 2551 flies above the ear 2550-and hence does not :block the rotation of the shaft 2414. However, when the machine is operated, the slides 2:554 and 12551 are permitted to move forwardly in the machine, the :finger 2551 will move down behind the car 2559 prior to the movement of the leading frame bar 915, and hence the symbol type sector 2459 will-he prevented :from moving to printing position. The slides are provided with abutments which are adapted to cooperate with studs mounted on the stems of the various control keys so as to prevent forwardmovement oftheslides-when the machine is operated. For this purpose, the forward end of the slide 2554 is provided with abutments 256i and .2582, which lie immediately behind the studs [-083 and 1098., respectively, on the Subtract .l and.Ba lance 1"l;eys552 and 1552.. Hence, when of these keys is depressed, slide be blocked against forward movement, and hence the shaft 2414 w'll be free to rotate so as to position the type sector 2450. It will be noted that there is no abutment provided for the stud H94 mounted in the stem of the Sub-Balance 1 key 653, since, when this key :is depressed, the Balance 1 key is also pulled down so as to move the stud I098 in front of the abutment 2562. In a similar manner, the stud 1068 on the Add 1 key 65-! will move in front of an abutment 2551 on the forward end of the slide and thereby enable the symbol 2534 to be printed when the machine is operated with this key depressed. As also shown herein, the Subtract 2-5 key 558 and the Total 2 5 key 559 are provided with studs 2553 and 2564 (Figures 3 and 4), respectively, which are adapted to move in front of abutments 12555 and 2565 formed on the slide 2554 and thereby permit an appropriate symbol to be printed during the course .of these operations. For a similar reason, the overdraft pitman 2352 is provided with a formed-over car 2563, which is adapted to move down in front of an abutment 2569 on the slide 2554 when the pitman is operated during an overdraft operation, thereby blocking the slide and enabling the Overdr.aft" symbol 25 to be printed .on the record material. The slide 2551 is provided near its rear end with a pair of upstanding fingers 2510 and 2511, which are adapted to cooperate with studs 2515, 2515, 2512, and 2513 on the "Reverse key 511, the Subtract 6-9 key v651, the Non-select" key 512, and the Total 6-9 "key 558, respectively, so as to block the slide and thereby prevent the shaft 2414 from being blocked by the finger "2551. As a result, a symbol corresponding to each of these keys will be printed after the amount.

Inasmuch as the slide member H53 (Figure 8) is restored slightly earlier in the machine cycle than the shaft 2414, which is controlled from the leading frame bar M5, the finger 2551 will be moved from behind the car 2550 while the spring 2416 (Figure 9) is still urging the link 2410 toward the rear of the machine. Hence, the shaft 2414 and also the symbol type sector 2450 will tend to jump into printing position at this time if means is not provided for preventing this undesirable condition.

One possible form of means for overcoming this difficulty is shown in Figure 14 and comprises a latch 259i pivoted on a stud 2592 mounted in the auxiliary frame plate 2083. The latch is urged by a spring 2593 to engage a formedover car 2594 rovided on the upper end of an arm .2595 secured to the right-hand end of the shaft 2414. The latch is normally prevented from engaging with said car, .by a stud 2595 on the lever 2186, which bears against a tail formed on the latch. When the machine is cycled, the lever 2180 is rocked first counter-clockwise to move the stud 2595 off the tail 2591 in the proper timing and so permit .the latch to engage with the ear 2594, provided the shaft is being blocked at this time by the finger 2551. .If the shaft .is not being blocked by the finger, the car will have taken up a position beneath the latch at the time when the stud .2596 moves off .the tail 2591, and consequently the latch will be ineffective to block the shaft. In case the shaft is blocked and the latch is effective, it will restrain the shaft against movement after the finger 255i moves away from the car 2550 and will continue to be effective for this purpose until after the leading frame bar MS has been restored to its home position.

- 2554 and 2551 is a bail 2514 a lug 2516 (Figure formed on the lower edge of the #1 totalizer slide I061 in a manner to be more fully described hereinafter. The left-hand side arm of the bail 2514 is provided with a slot 2511, within which is received a stud 2518 secured to the lower end of a link 2519, which is pivotally connected at its upper end to an arm 2580, which is secured to the shaft 2538. Inasmuch as the forward end of the slot 2511 is formed to follow the arc described by the stud 2518 when the link 2519 is swung about its pivot on the arm 2580, the bail 2514 and the shaft 2538 will be effectively joined together for unitary movement when the stud is in the forward portion of the slot, as shown in Figure 2. As a result, when the #1 totalizer slide I061 moves to its total-taking position so as to locate the lug 2516 above the step 2515 on the ball, the bail and the shaft 2538 will be prevented from rotating under the influence of the spring 2558, and consequently the finger 255l will be prevented from moving in front of the ear 2550 to thereby block the movement of the symbol printing shaft 2414. Hence, the Balance 1 and Sub-total symbols 2532 and 2529, respectively, will be free to print when either a balance operation or a subbalance operation in the #1 totalizer is controlled from a carriage stop. In a similar manner, the Subtract 1 symbol 253l may be caused to print when a subtract operation in v the #1 totalizer is controlled from a carriage stop by means of an adjustable abutment member 258! (Figure 5), which is pivotally mounted on a stud 2582 secured to the #1 totalizer slide 1061, which may be held in effective or ineffective position by means of a small clamping screw 2583. When this member is in its effective position, as shown in Figure 5, its rear end will lie above the step 2515 on the bail when the slide I061 is in its subtract position and thereby prevent the finger 255! from blocking movement of the symbol printing shaft 2414. If, for some reason, it should be undesirable to print the Subtract 1 symbol on operations controlled from a carriage stop, as in cases where there are no carbon copies upon which the transactions are to be recorded and the printing of subtract items in red is suflicient to identify them, "the member 258! may be moved to its ineffective position, Where its rear end will no longer be in position to block the movement of the bail 2514, thereby causing the symbol printing shaft 2414 to be blocked by the finger 2551. Printing of the Subtract 1 symbol from the Subtract 1 control key will still be effective due to the stud moving down in front of the lug 256l (Figure 4).

As shown in Figure 7, a stud 2584 is secured to the left side arm of the bail 2514 immediately below the edge of the bail 2531, so that, when i the latter bail is held down, the bail 2514 will likewise be held down. Thus, when any of the slides l05l for the totalizers #2-#9 are moved to their total-taking positions, so as to locate the lugs 2536 above the bail 2531, the bail 2514 will likewise be prevented from moving upward during the machine cycle, and the finger 255l Will not be effective to block the rotation of the Non-symbol key In order to prevent symbols from being printed on operations performed under the control of carriage stops, a Non-symbol key 610 has been provided. As shown in Figure 1, this key has a stud 2588 secured in its stem, which cooperates with a bifurcation provided in an arm 2589 pivoted on a stud 2590 secured to the partition plate 633. Pivotally connected to this arm is the upper end of a link 2598, which is connected at its lower end to the stud 2518 secured to the link. 2519. Hence, when the Non-symbol key is depressed, the link will be drawn upward, thereby swinging the lower end of the link 2519 toward the rear of the machine, so as to move the stud 2518 into the rear'portion of the slot 2511, which extends at right angles to the forward end of the slot. The bail 2514 and the shaft 2538 will thereby be permitted to move relatively to each other, so that, although the bail may be prevented by the #1 totalizer slide I061 or by the bail 2531 from moving upward when the machine is cycled, the shaft and the finger 2551 will not be blocked and will be able to move into effective position to block the operation of the symbol printing shaft 2414. Thus, symbol printing will be prevented on all operations controlled by the carriage stops, although the printing of symbols under the control of the control keys will remain effective.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended that the invention shall be confined to the particular embodiment disclosed herein but rather that it shall extend to all structures employing the principles taught herein.

What is claimed is:

1. In a machine of the class described, having means for giving the machine cycles of operation, the combination of a type carrier yieldably movable from a non-printing position to any one of a plurality of printing positions; a plurality of depressible control keys effective when depressed to control the positioning of the type carrier in one of its plurality of printing positions; means for preventing movement of the type carrier from said non-printing position, said means being normally located in an ineffective position but movable from said ineffective position to an effective position; means for urging said preventing means to move from said ineffective position to said effective position on each cycle of operation of the machine and prior to the movement of the type carrier from said nonprinting position; and means operatively connected to the urging means and operating to sense the presence of a depressed control key and effective when one of said control keys is depressed to cause said preventing means to be retained in its ineffective position when thermacliine is cycled to enable the type carrier to be positioned. in one of its printing positions by said depressed control key.

2. In a machine of the class described, having said ineffective tion-on each cycleo'f operationof .the machine z-xable said retaining means e retain-the type carrier in its non-printing posimember is'moved to certain positions'to 'cause i 'thepreventing means to be retained ininefiective position; and manually-operable .means for dis- :abling the'connecting means to cause the preiventing means to move to itseffective position to prevent the type "tion of the positionable rmemb'er.

- 3. Inamachine of the class described, the combin'ation of means .ifor giving the machine cycles of operation; atypecarrieremovablecfrom a nonprinting position toaany one 10f a plurality .of printing positions; means 'operableon each cycle of operation of the machine for :yieldably urg- 'ing-said type carrier to movefromtitsisaid nonprinting position tions; meansior blockingithe movement of said #type carrierfrom'said non-printingsposition, "said means normally'in an-inefiective position, but

. movable to an effective position; :means for yieldto move from 'ably urging said blocking means position 'to said effective posiand prior to themovement or said type carrier from said non-printing position; a plurality :of positionable control members; imeans controlled by said control membersivhen moved rtotcertain positions, iorpreventing movement of saidtblocking means to its effective position; andia manipulative. :member for meanssoas to enable said blocking means to move .to-its'effective position to block. the'movedisabling said preventing ment of said type carrier.

4. In a machine of theclassdescribedhaving meansfor-giving the machine cycles ofoperation,

plurality of function-con- :a'traveling carriage, a trolling 'keys, and a pluralityof function-determining elements positionable under the control 40f the traveling carriage or a combination of a type carrier the control keys, the provided witha :plurality of'symbolcharacters' for identifying the various operations performed by the machine,

" said type carrier being movable from a nonl printing position to any printing positions; means normallyeffective to one of 'a plurality of Iretain said type carrier innon-printing position;

-means controlled by the control keysfor rendersaid retainingrneans ineffective, when one of said keys has been depressed; means controlled by the function-determining elements for rendering said retaining means ineffective upon movement of=oneormore of said elements to a predetermined position; and manually operated meansfor clisabling'said last means so as toento remain effective to tion regardless of whether or not one or more :of the elements "have been moved tosaid :pre-

tdetermined positions.

5. In a machine of theclass described-conlstructed and arranged to print from said non-printing carrier from moving =from: said non printing position regardless .of the ,posito cheer itslsaidlprinting posij material and having :a traveling carriage tempport the record material and a pluralityzof-controlelements, the combination of .a symbol :print- 'ing sector; means including arshaft to position the sector means to obstructpositioning I'IXIOVG- ment or the shaft; means normally effective to retain-the obstructing means in' inefiectiveiposi- -ti'on; but operable to move'theobstructing means to obstructing-position at the xbeginning of. each machine operation; means controlled by the .elements to render the obstructing means linefiective during machine operation; :means controlled 'by' the traveling carriageto -render the iobstructing means ineffective during machine :operatinn; and-means 'to disable the latter rendering ameans to enable the :obstructing means 'to :be aetfective in all operations controlled by the traveling :car-

- 'riage and ineffective in'a'll operationsrcontrolled :by the elements.

- 61 In a machine of-the class described, constructed andarranged tovprintrecords on record materialand having a travelingmarriage forrsupon-the record material; means including.

porting *the 'record material vand :a i'zpluralitysof control keys; the :combination :of .a printingzsectorfor printing functioneidentifying zcharacters arshaft to -position the printing::sector; a :plurality of function-controlling islicles positionable .zunfier control of the traveling :carriagelor lithe scontrol keys; meansoperatively connected to the *shaft and coacting withthe slides .to:positionzsaid;shaft and the printing :sectorwaccording to the epoch- 'tloning-ofsaid slidespinormally sinefiective means to obstruct =positioning movement :of the.=shait; means opera'ting atxthevbeginningrof each-imachine 'pperation to \yieldinglymove ithe :obstructing'-means-from-ineffective :to effective position;

- means intermediate the controlikeys iandtherobstructing means to retain said obstructing. means inineffective :position'when said :control :keys are ;efiective;-zmeans controlled aby thelslideawhemin pertain .pred'etermined :positions,-, to meta-in the obstrmtingxmeans in ineffective position; .and means to render thellatter retaining ;means.:in-

.efle'ctive whereby theslides, "when: positioned :"by

- theitraveling carriage, will be inefiectivato controlrthe positioning of the-shaft andgtheiprinting esector.

7;.In;-a=;machine=.ot:.the character described,

iconstructed :andtzarrangedpto print -rec0rds;;.on rrecordzimaterial and ;having a -traveling, carriage zxtosupport the record material, [and-a plurality 10f .rlepressible functionecontrolling ekeys, ;the

-:combination zofwa-iplurality of slides gpositionable lunderflcontrol of the; traveling .=.carriage con-the control ,keys .for .determiningthe functions to ;be

performed jbynthe machine; a type carrier 1 movcable. fromaznonepr'mting to r any zone of a series of printing positions .to :print:.characters .onrthe II'BCDldsnlfitEIMl to iidentifypithe ,functions :per-

.formed the machine a :shaft operatively-eon- :nected to. the -:type I vcarrier;- cmeans controlled Thy-l the; slidesi in predetermined; positions thereof for positioning theshaft: andxthe carrierl'accordingly Lnormally ,eflective-rmeans'for obstruct- .mapositioning: movement of-theashaft and the .type carrier; meansicontrolled by thes'slidesfor rendering the:obstructingameansineffective; :and manually operated lmeansior disablingthe trendering -means vto cause the obstructing means .:to

-beefiective at allltimes.

--.8.*In amachine of the-class descrihed ,.con-

, strluctecli and 1arrangelito;v print records 0112 record material; and:havingatravelingzcarriage; to :sup-

records on record -7 5 port therrrecord material, and :a; pluralitygof oper- 

